mainstreams
n.
（思想或行为的）主流（mainstream的复数形式）;
例句:
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Automation, networking and informationization are the mainstreams of the power industry development.
自动化 、 网络化和信息化是目前电力行业发展的主流.
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Previous studies have been focused on the two mainstreams : Revolutionary Nationalism and Liberal Nationalism.
以往的民粹主义研究是建基于“革命民粹派”与“自由主义民粹派”两个概念上的.